We bring you this news in case you're pining for what some people consider the 'warmer' light - and tinkle of metal against glass when the damn things blow - in a spirit of slight bafflement and evangelism for fluorescent ones. They come on immediately now, honest, last for years and cost less to run. We've never quite understood the lightbulb wars; if you're a diehard fan of the old bulby bulbs, pause a moment before stepping on that South West train and tell us why.